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The baseband and intermediate frequency (IF) frequency modulated continuous wave (FMCW) radar receiver topologies are compared on the bases of receiver nonlinearity, time domain interferometry, receiver noise and demodulator port isolation. It is shown that an IF receiver is capable of suppressing distortions, where the same nonlinearity would result in a baseband (or zero-IF) receiver detecting false...
This paper presents analysis of the effects of nonperiodic perturbations in periodic RF structures. Small departures from periodicity change the phase shift experienced by a wave as it traverses an imperfect cell. Cell imperfections may be introduced intentionally or due to fabrication errors or material properties variations. The cumulative effect produces distortions of the fields. If the errors...
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